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WildcardQuery.cs
Package: xunlong0.6.rar [view]
Upload User: zhangkuixh
Upload Date: 2013-09-30
Package Size: 5473k
Code Size: 2k
Category:
Search Engine
Development Platform:
C#
- /*
- * Copyright 2004 The Apache Software Foundation
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
- using System;
- using IndexReader = Lucene.Net.Index.IndexReader;
- using Term = Lucene.Net.Index.Term;
- namespace Lucene.Net.Search
- {
- /// <summary>Implements the wildcard search query. Supported wildcards are <code>*</code>, which
- /// matches any character sequence (including the empty one), and <code>?</code>,
- /// which matches any single character. Note this query can be slow, as it
- /// needs to iterate over many terms. In order to prevent extremely slow WildcardQueries,
- /// a Wildcard term should not start with one of the wildcards <code>*</code> or
- /// <code>?</code>.
- ///
- /// </summary>
- /// <seealso cref="WildcardTermEnum">
- /// </seealso>
- [Serializable]
- public class WildcardQuery : MultiTermQuery
- {
- public WildcardQuery(Term term) : base(term)
- {
- }
- protected internal override FilteredTermEnum GetEnum(IndexReader reader)
- {
- return new WildcardTermEnum(reader, GetTerm());
- }
- public override bool Equals(System.Object o)
- {
- if (o is WildcardQuery)
- return base.Equals(o);
- return false;
- }
- public override int GetHashCode()
- {
- return base.GetHashCode();
- }
- }
- }